19432243 has 2 divisors, whose sum is σ = 19432244. Its totient is φ = 19432242.

The previous prime is 19432229. The next prime is 19432261. The reversal of 19432243 is 34223491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19432243 - 2¹³ = 19424051 is a prime.

It is a super-2 number, since 2×19432243² = 755224136022098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19432223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9716121 + 9716122.

It is an arithmetic number, because the mean of its divisors is an integer number (9716122).

Almost surely, 2^19432243 is an apocalyptic number.

19432243 is a deficient number, since it is larger than the sum of its proper divisors (1).

19432243 is an equidigital number, since it uses as much as digits as its factorization.

19432243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 19432243 is about 4408.2017875773. The cubic root of 19432243 is about 268.8485163970.

It can be divided in two parts, 1943 and 2243, that added together give a triangular number (4186 = T₉₁).

The spelling of 19432243 in words is "nineteen million, four hundred thirty-two thousand, two hundred forty-three".